Results 41 to 50 of about 689 (170)
The Astrophysical Journal, 2023 We present a multiwavelength analysis using the Submillimeter Array (SMA), James Clerk Maxwell Telescope, NOEMA, JWST, the Hubble Space Telescope (HST), and the Spitzer Space Telescope of two dusty strongly star-forming galaxies, 850.1 and 850.2, seen ...
Ian Smail +34 more
doaj +1 more source
Energetic nuclear transients in luminous and ultraluminous infrared galaxies [PDF]
, 2022 Energetic nuclear outbursts have been discovered in luminous and ultraluminous infrared galaxies (U/LIRGs) at unexpectedly high rates. To investigate this population of transients, we performed a search in mid-IR data from the Wide-field Infrared Survey
Perez-Torres MA +7 more
core +1 more source
The Astrophysical Journal, 2023 We report the results of Atacama Large Millimeter/submillimeter Array (ALMA) 1–2 kpc resolution, three rotational transition-line ( J = 2–1, J = 3–2, and J = 4–3) observations of multiple dense molecular gas tracers (HCN, HCO ^+ , and HNC) for 10 nearby (
Masatoshi Imanishi +3 more
doaj +1 more source
Nature of Widely Separated Ultraluminous Infrared Galaxies
The Astrophysical Journal, 2001 In the complete sample of ultraluminous infrared galaxies (ULIRGs) compiled by Kim (1995) about 5% consists of widely separated galaxies which are presumably in the early phase of interaction. This fact is contrary to the conventional view that ULIRGs are in the final stages of the merger of two gas-rich disk galaxies.
Dinh-V-Trung +4 more
openaire +2 more sources
The Astrophysical Journal, 2023 We present the results of our ALMA ≲0.5 kpc resolution dense molecular line (HCN and HCO ^+ J = 2–1, J = 3–2, and J = 4–3) observations of 12 nearby (ultra)luminous infrared galaxies ([U]LIRGs). After matching beam sizes of all molecular line data to the
Masatoshi Imanishi +3 more
doaj +1 more source
Hidden Quasars in Ultraluminous Infrared Galaxies [PDF]
Symposium - International Astronomical Union, 1999 Many ultraluminous infrared galaxies (ULIRGs) are powered by quasars hidden in the center, but many are also powered by starbursts. A simply diagnostic diagram is proposed that can identify obscured quasars in ULIRGs by their high-ionization emission lines ([O III]λ5007/Hβ ≳ 5), and “warm” IR color (f25/f60≳ 0.25).
Brotherton, M. S. +3 more
openaire +2 more sources
Seeking for the Leading Actor on the Cosmic Stage: Galaxies versus Supermassive Black Holes
, 2012 Advances in Astronomy, Volume 2012, Issue 1, 2012.
Angela Bongiorno +4 more
wiley +1 more source
The Astrophysical Journal Supplement Series, 2023 We conduct hard X-ray to radio multiwavelength spectral energy distribution (SED) decomposition for 57 local luminous and ultraluminous infrared galaxies observed with the Nuclear Spectroscopic Telescope Array and/or Swift/Burst Alert Telescope in the ...
Satoshi Yamada +9 more
doaj +1 more source
Ultraluminous infrared galaxies: Starburst vs. AGN
, 1999 We have obtained ISOPHOT-S low resolution mid-infrared spectra of a sample of 60 Ultraluminous Infrared Galaxies (ULIRGs). We use the strength of the 'PAH' mid-infrared features as a discriminator between starburst and AGN activity, and to probe for ...
Moorwood, AFM +7 more
core +1 more source
Ultraluminous Infrared Galaxies: Power Sources and Ages Along the Merger Sequence [PDF]
, 2000 Ultraluminous infrared galaxies (ULIRGs) are the most luminous galaxies in the local universe, with power outputs above 10¹² times that of our sun. Almost all ULIRGs are found to be associated with collisions between large, gas-rich galaxies.
Murphy, Thomas Williams, Jr.
core +1 more source